org.hawkular.agent.monitor.api

Interface InventoryListener

All Known Subinterfaces:

InventoryStorage, StorageAdapter

All Known Implementing Classes:

AsyncInventoryStorage, HawkularStorageAdapter, InventoryStorageProxy, MetricsOnlyStorageAdapter, SchedulerService

public interface InventoryListener

A listener for changes in the inventory of resources maintained by the present agent.

Author:

Peter Palaga

Method Summary

Modifier and Type	Method and Description
<L> void	discoverAllFinished(InventoryEvent<L> event) Notifies the listener that the full discovery of resources has finished.
<L> void	resourceRemoved(InventoryEvent<L> event) Notifies this listener that the resource in InventoryEvent.getPayload() was removed from the monitored endpoint.
<L> void	resourcesAdded(InventoryEvent<L> event) Notifies this listener that the resource in InventoryEvent.getPayload() was added to the monitored endpoint.

Method Detail

discoverAllFinished

<L> void discoverAllFinished(InventoryEvent<L> event)

Notifies the listener that the full discovery of resources has finished. The list in InventoryEvent.getPayload() is immutable and contains all resources discovered in breadth first order.

If the listener maintains a list of resources, this notification means that that the content of the old list should be thrown away and replaced by the list in InventoryEvent.getPayload().

Note that during full discovery #resourceAdded(InventoryEvent) is not invoked for resources delivered via discoverAllFinished(InventoryEvent).

Parameters:

event - the InventoryEvent

resourcesAdded

<L> void resourcesAdded(InventoryEvent<L> event)

Notifies this listener that the resource in InventoryEvent.getPayload() was added to the monitored endpoint. Note that this event is fired only for resources added by the present agent. Resources added by other means can only be detected by a full discovery - see discoverAllFinished(InventoryEvent).

Parameters:

event - the InventoryEvent

resourceRemoved

<L> void resourceRemoved(InventoryEvent<L> event)

Notifies this listener that the resource in InventoryEvent.getPayload() was removed from the monitored endpoint. Note that this event is fired only for resources removed by the present agent. Resources removed by other means can only be detected by a full discovery - see discoverAllFinished(InventoryEvent).

Parameters:

event - the InventoryEvent